Assume material is added at the beginning of a process, and the beginning WIP inventory is 30 per cent complete as to conversion costs. Using the FIFO method of costing, the total equivalent units for material for this process during this period is equal to

1. Beginning inventory this period for the process.
2. Units started this period in this process plus the beginning inventory.
3. Units started this period in this process plus 70 per cent of beginning inventory.
4. Units started and completed this period in this process.